2018 Easter Special Offering. Fantastic Easter Special is the fifth episode of the eleventh season of the American animated television series South Park, and the 158th episode of the series overall. It first aired on Comedy Central in the United States on April 4, 2007. The episode parodies The Da Vinci Code. The episode was written by series co-creator Trey Parker and is rated TV-MA in the United States. Determined to get the real story behind why he has to decorate eggs for Easter, Stan starts asking his Dad some tough questions. The answers lead to an ancient and mysterious secret society created in the Middle Ages to protect the secret of the Easter Bunny. Threats to the sanctity of Easter are imminent from Bill Donohue and the Catholic League.